中央研究院 原子與分子科學研究所

Mass-analyzed threshold ionization spectra of jet-cooled [(h⁶-PhMe)(h⁶-PhH)Cr] and [(h⁶-Ph₂)(h⁶-PhH)Cr] reveal with unprecedented accuracy the effects of methyl and phenyl groups on the electronic structure of bis(h⁶- benzene)chromium. These “pure” substituent effects allow quantitative experimental determination of the ionization energy changes caused by the mutual substituent influence in bisarene systems. Two types of such influence have been revealed for the first time in bis(h⁶-toluene)- chromium.

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